William D Harkins 1873-1951 PhD Stanford 1907 Nuclear chemist Involved in several diverse fields of physics and chemistry. Suggested that the abundance of elements in stars was a nuclear effect (1917). Coined the word 'neutron' which was later discovered in 1932 by Chadwick. Built cyclotron at FermiLab which was used in neutron diffusion studies (1936). Proposed the alpha-particle model of nuclei. https://en.wikipedia.org/wiki/William_Draper_Harkins